3072745621 has 16 divisors (see below), whose sum is σ = 3372969600. Its totient is φ = 2776062400.

The previous prime is 3072745603. The next prime is 3072745639. The reversal of 3072745621 is 1265472703.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3072745603) and next prime (3072745639).

It is a cyclic number.

It is not a de Polignac number, because 3072745621 - 2⁵ = 3072745589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3072745681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1329615 + ... + 1331923.

It is an arithmetic number, because the mean of its divisors is an integer number (210810600).

Almost surely, 2^3072745621 is an apocalyptic number.

It is an amenable number.

3072745621 is a deficient number, since it is larger than the sum of its proper divisors (300223979).

3072745621 is a wasteful number, since it uses less digits than its factorization.

3072745621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 3072745621 is about 55432.3517541877. The cubic root of 3072745621 is about 1453.8140761469.

The spelling of 3072745621 in words is "three billion, seventy-two million, seven hundred forty-five thousand, six hundred twenty-one".